630
FXUS65 KPIH 071043
AFDPIH
Area Forecast Discussion
National Weather Service Pocatello ID
343 AM MST Wed Dec 7 2016
.SHORT TERM...Today through Friday. Generally expecting a cool
dry northwesterly flow today and tonight ahead of a strong push
of Pacific moisture that will spread across the forecast area
during the day Thursday. Initial impacts will be seen over the
Central Mountains around mid-day Thursday, and will spread to
the rest of the forecast area Thursday evening. A steady stream
of moisture will continue through the end of the period, though
temperatures will warm enough on Friday to see snow changing
over to rain. There may be brief periods of freezing rain in the
valleys during the transition, but should be localized and
short-lived. Hinsberger
.LONG TERM...Friday night through next Wednesday. This will be a
very active period. Timing and intensity amounts continue to vary
slightly from model run to run. Regardless...models continue to show
8 to 12 inches of snow for the Western Central mountains and the
Eastern highlands Friday night through Saturday. Models continue to
show elevated snow levels for portions of the Snake River plain,
Eastern Magic valley and the Southern Highlands likely limiting the
amount of valley snow particularly along the I-84/I-86 corridors.
Only a Trace to inch is currently expected. Snow amounts quickly rise
for bench areas and the mountains.
Models continue to show another round of snow showers Sunday night
into Monday. They then continue to show yet another round of snow
showers on Tuesday afternoon into Wednesday. For the storm Tuesday,
models are indicating warmer temperatures brining back the
possibility of valley rain or least a rain/snow mix. Wyatt
&&
.AVIATION...Snow showers have ended for KBYI and KPIH. However,
there are lingering MVFR CIGS. These CIGS are expected to continue
through much of the morning. KIDA and KDIJ will likely see light snow
showers early this morning bringing back MVFR CIGS/VIS. These MVFR
CIGS/VIS are expected to continue through much of the morning.
KSUN will likely stay VFR through out the period. The next system
arrives late Thursday morning for KSUN and Thursday afternoon for all
other TAF sites. Expect IFR CIGS/VIS for all TAF sites with this
system.
Wyatt
&&
.PIH WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Thursday morning through Saturday
afternoon for IDZ018-019-022>025-031-032.
&&
$$